AD7789 Analog Devices, AD7789 Datasheet - Page 10

• Manufacturer Part Number: AD7789
• Description: 24-Bit, Single-Channel, Ultra Low Power, Sigma Delta A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7789

• Resolution (bits): 24bit
• # Chan: 1
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

AD7788/AD7789
TYPICAL PERFORMANCE CHARACTERISTICS
–100
–120
–110
8388591
–10
–20
–30
–40
–50
–60
–70
–80
–90
70
60
50
40
30
20
10
0
0
Figure 6. Frequency Response with 16.6 Hz Update Rate
0
V
V
T
RMS NOISE = 1.25µV
A
DD
REF
= 25°C
= 3V
= 2.048V
20
Figure 7. AD7789 Noise Histogram
40
60
FREQUENCY (Hz)
CODE
80
100
120
140
8388625
160
Rev. B | Page 10 of 20
8388625
8388591
3.0
2.5
2.0
1.5
1.0
0.5
0
0
0
V
UPDATE RATE = 16.6Hz
T
A
DD
= 25°C
0.5
= 5V
Figure 9. AD7788/AD7789 Noise vs. V
V
T
1.0
200
DD
A
Figure 8. AD7789 Noise Plot
= 25°C, RMS NOISE = 1.25µV
= 3V, V
1.5
REF
2.0
400
= 2.048V,
READ NO.
V
REF
2.5
(V)
3.0
600
3.5
REF
4.0
800
4.5
1000
5.0